A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5990-01-050-7535
NSN 6685-00-959-8815
NSN 6685-00-459-8984
NSN 4140-01-025-1555
NSN 5998-01-634-0604
NSN 5960-00-113-0019
NSN 5925-01-095-5733
NSN 5905-01-587-0710
NSN 6130-01-447-5163
NSN 5895-00-862-5564
NSN 2925-01-224-1885
NSN 5999-00-993-6449